The San Francisco Department of Public Health said Tuesday that it has identified three active cases of tuberculosis at Archbishop Riordan High School since November.
Health officials did not disclose whether the three people were students, teachers, staff members or other members of the school community.
The department and school leadership have implemented a coordinated screening and contact tracing effort in response to the cases, including required testing for all students and staff, according to DPH. School officials did not immediately respond to a request for comment…